[L20 trouble]
Is group operation carried out?
Do outside devices normally work?
(Outside devices connected with Application
control kit input terminal TB2 : IN1)
Check cause of operation.
Check corresponding
indoor unit/outdoor unit.
Is the multiple same central
control system addresses connected?
Is there check code
on follower unit in master
and sub remote controllers?
Are wiring connections
to communication lines
Uh (U3, U4) normal?
Replace central controller
(including "1:1 model" connection interface)
and indoor P.C. board (MCC-16
96
).
Correct wiring connection.
Correct central control system address.
Replace outside devices.
Replace indoor P.C. board (MCC-16
96
).
YES
YES
YES
NO
YES
YES
NO
NO
NO
NO
[L30 trouble]
[P30 trouble] (Central controller)
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